Non-disturbance ship main steam turbine control switchover system and switchover method

A main steam turbine and switching system technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of easy failure, low control precision, fluctuation of main engine speed, etc., and achieve smooth control switching, high control precision, The effect of state stability

CN103133061AInactive Publication Date: 2013-06-05中国船舶重工集团公司第七〇三研究所
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-06-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

A non-disturbance ship main steam turbine control switchover system comprises a hydraulic servo-motor and an electro-hydraulic actuator, wherein a valve rod of the hydraulic servo-motor is in drive connection with a cam steam distribution mechanism, the cam steam distribution mechanism is connected with an on-site operational hand wheel, the electro-hydraulic actuator is connected with a main controller, and the main controller is connected with a host manipulator. The non-disturbance ship main steam turbine control switchover system is characterized in that the hydraulic servo-motor is connected with a pilot valve, a valve rod of the pilot valve is provided with a displacement transmitter, the displacement transmitter is in electric connection with the main controller, an upper cavity and a lower cavity of a cylinder body of the hydraulic servo-motor are respectively connected with two oil path interfaces of the pilot valve, a drainage port of the pilot valve is connected with an oil discharging pipeline, an oil filling port of the pilot valve is connected with a transition tee joint which is connected with the oil discharging pipeline and a power oil pipeline, the oil filling port switches over linkage between the oil discharging pipeline and the power oil pipeline, and the transition tee joint is provided with a state detector which is in electrical connection with the main controller. The control precision is high, state is stable, and switchover controlling is smooth.
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Description

technical field

[0001] The invention relates to a control system of a ship's main steam turbine and a switching method of a control location, in particular to a control switching system and a switching method of a non-disturbance ship's main steam turbine. Background technique

[0002] The control of the ship's main steam turbine is divided into local control and remote control room control. The local control uses a rigid connection structure for close-range operation through a mechanical hand wheel. The control link is simple, the failure rate is low, and the reliability is high. The operation in the engine room is labor-intensive, and only open-loop control of the valve position can be performed, and the control accuracy is low; the remote control room uses electrical equipment such as the main engine manipulator, main engine controller, electro-hydraulic actuator, wrong throttle, oil motor, etc. Remote operation with the mechanical structure through the electro-hydraulic ...

Examples

Embodiment Construction

[0013] Embodiments of the present invention are as Figures 1 to 3 As shown, the undisturbed ship main steam turbine control switching system is provided with an oil motor 6 and an electro-hydraulic actuator 4, the valve stem of the oil motor 6 is connected to the cam steam distribution mechanism 7, and the cam steam distribution mechanism 7 is connected through a half coupling 15 There is the local operation handwheel 1; the valve stem of the oil motor 6 drives the camshaft through the oil motor connection key 16, and the local operation handwheel 1 drives the camshaft 15 through the handwheel connection key 17; the electro-hydraulic actuator 4 is connected to the main controller 3. The main controller 3 is connected with the host manipulator 2, and the main controller 3 receives the control signal from the host manipulator 2 to control the electro-hydraulic actuator 4; Wrong throttle 5, displacement transmitter can adopt grating scale, displacement transmitter 13 monitors th...